Partly correct.

Monero amounts and addresses are not visible, period.

Ring signatures obfuscate senders (visible, but probabilistic)

Cashu is also very good privacy. Amounts, senders, receivers all hidden even from the mints themselves.

A few differences are that Monero is self-custodial, Cashu isn't, so you can be rugged.

Every mint can also arbitrarily print Cashu tokens unbacked by Bitcoin.

Not possible with Monero.